Photo-detector for ultraviolet and process for its production
US4910570A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 16, 1988 |
| Grant date | Mar 20, 1990 |
| Priority date | — |
| Expiry date | Jun 16, 2008 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10F30/227
Abstract
A semiconductor photo-detector is disclosed. The inventive photo-detector is especially sensitive to light in the ultraviolet and/or blue portions of the spectrum. The semiconductor body comprising the detector is arranged with a band structure which, through use of a potential threshold, delimits a particular region of the semiconductor body. Illustratively, the particular delimited region is coincident with the region where ultraviolet and/or blue light is absorbed. Charge carriers generated in the delimited region through the absorption of ultraviolet and/or blue light contribute to the output signal. Other wavelengths of light are absorbed in the semiconductor body outside the delimited region. The charged particles generated by the absorption of light outside the delimited region do not contribute to the output signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.